| 非线性三维基准转换的稳健估计 |
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| 引用本文： | 陈义,沈云中. 非线性三维基准转换的稳健估计[J]. 大地测量与地球动力学, 2003, 23(4): 49-53 |
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| 作者姓名： | 陈义 沈云中 |
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| 作者单位： | 同济大学,上海,200092;同济大学,上海,200092 |
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| 基金项目： | 地球空间环境与大地测量教育部重点实验室资助项目.课题编号 0 2 -0 9-10 |
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| 摘 要： | 三维基准转换广泛应用于大地测量和摄影测量。因为处理非线性的三维基准转换较困难,大多数情况下,是用线性的三维基准转换来解决问题,为此,提出了一种新的简便方法来处理非线性三维基准转换问题。该方法应用了稳健估计原理,使解算得到的转换参数更加稳定和可靠。最后给出了一个算例,计算结果表明新方法非常有效。
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| 关 键 词： | 三维基准转换 稳健估计 非线性转换模型 |
| 文章编号： | 1671-5942(2003)04-0049-05 |
| 修稿时间： | 2003-06-23 |
ROBUST ESTIMATION OF THREE DIMENSIONAL NONLINEAR DATUM TRANSFORMATION |
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| Chen Yi and Shen Yunzhong. ROBUST ESTIMATION OF THREE DIMENSIONAL NONLINEAR DATUM TRANSFORMATION[J]. Journal of Geodesy and Geodynamics, 2003, 23(4): 49-53 |
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| Authors: | Chen Yi and Shen Yunzhong |
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| Abstract: | Three dimensional nonlinear datum transformation is widely used in geodesy and photogrammetry.In most cases linear model is used to process three dimensional datum transformations,because the nonlinear datum transformation model is much more complicated and difficult to process.In this paper, a new simple method in which particular robust estimation is used for processing three dimensional nonlinear datum transformations is presented.It makes the estimation of transformation parameters be more reliable and stable.A numerical example given to illustrate this method is effective and easy to understand. |
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| Keywords: | three dimensional datum transformation robust estimation nonlinear transformation model |
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